Science.100 KG of an unknown metal at 94°C is placed in 100 g of water at 10°C the final temperature of the metal and water are at 70°C what is the heat capacity of the unknown metal
March 2, 2015

ScienceA piece of copper at 90°C is added 2.200 KG of water at 15°C inside an aluminum calorimeter that has a mass of .100 KG the final temperature of the copper water and calorimeter is 25°C what is the mass of the copper piece
March 2, 2015

Science.100 KG piece of metal is heated to 480°C and then quickly place in .250 KG of water at 20°C which is contained in a .200 KG aluminum calorimeter the final temperature of the water metal and calorimeter is 36°C what is the specific heat to Capacity of the metal piece
March 2, 2015

mathA school club consist of 30 male students and 13 female students. If 3 students are selected to represent the club in the student government, what is tge probability 2 will be male and 1 will be female? please help me
November 24, 2013

statisticA computerstore has 75 printers of which 25 are laser printers and 50 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.
November 21, 2013

statistic3 statistics professors and 7 chemistry professors are available to be advisors.If each professor has an equal chance of being selected, what is the probability that both professors are cgemistry professors?
November 13, 2013

CalculusA cylinder is inscribed in a right circular cone of height 5.5 and radius (at the base) equal to 2 . A) What are the dimensions of such a cylinder which has maximum volume? B) What is the radius? C) What is the height?
April 27, 2013

physicsYou stand 5.2 meters away from a spherical mirror and your image forms 6.3 meters away on the front side of the mirror. What is your magnification?
April 22, 2013

EnglishCan somebody help me write my rough draft for a speech about how youth's and adult's should get the same penalty for crime?
March 7, 2013

PhysicsA daredevil plans to bungee jump from a balloon 52.0 m above the ground. He will use a uniform elastic cord, tied to a harness around his body, to stop his fall at a point 15.0 m above the ground. Model his body as a particle and the cord as having negligible mass and obeying ...
February 21, 2013

maththank u....jessica made 8/3 pounds of fudge. she gives 3/4 of what she has to will. A. how many pounds or how much of a pound of fudge does will get? B. how many pounds or how much of a pound of fudge she have left?
November 14, 2012

mathjessica made 8/3 pounds of fudge. she gives 3/4 pound of fudge to will. how many pounds or how much of a pound of fudge does she have left?
November 14, 2012

math1,322 - if you are adding them up, that should be correct. if there are 12 tens, 10 tens equals 100 and the left over two 10s would equal 20. so thats 120+200+2=322 add the thousand and that equals 1,322.
November 8, 2012

physicsA newspaper carrier on delivery route travels 200.-m South-West and 300.-m West. What is the magnitude of the displacement?
November 8, 2012

physicsWhat is the magnitude of displacement for a person that walks 6.0-km North-East, 4.0-km East, and 6.0-km South?
November 8, 2012

physicsWhat is the magnitude of displacement for a person that walks 6.0-km North-East, 4.0-km East, and 6.0-km South?
November 8, 2012

mathDuring the playoffs you score 2 goals per game. By the end of the second playoff game you had 22 goals for the year. Find an equation that gives you the total number of goals scored for the year in terms of the number of playoff games. How many goals did you score before the ...
November 6, 2012

Pre-AlgebraWrite the expression for a number used as a factor fifteen times being multiplied by the same number used as a factor ten times. Then, write the product as one power. Thanks, Michaela
October 27, 2012

Pre-AlgebraWrite the expression for a number used as a factor fifteen times being multiplied by the same number used as a factor ten times. Then, write the product as one power. Thanks, Michaela
October 26, 2012

physicsA ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity vector makes a 45.0&...
November 20, 2011

physicsA ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity vector makes a 45.0&...
November 20, 2011

mathCigarette Use A study by the Partnership for a Drug-Free America indicated that, in 1998, 42% of teens in grades 7 through 12 had recently used cigarettes. A similar study in 2005 indicated that 22% of such teens had recently used cigarettes. (a) Write a linear equation that ...
September 13, 2011

GeometryThe measure of an angle's supplement is 76 less than the measure of the angle. Find the measure of the angle and its supplement.
August 22, 2011

GeometryPoint P is located on the segment between point A(1,4) and point D(7,13). The distance from A to P is twice the distance from P to D. What are the coordinates of point P?
August 17, 2011

geometryAn isosceles trapezoid with that bases 16 in and 34 in are inscribed in a circle such that one of the bases is the diameter. Find the area of the trapezoid.
June 13, 2011

9th grade integrated algebraa tree casts a 25 foot shadow on a sunny day if the angle of elevation from the tip of the shadow to the top of the tree 32 degrees, what is the height of the tree to the nearest thenth of a foot?
May 22, 2011

PhysicsA conduction heat wave is caused to pass through a metal bar of average temperature Tmean = 36 degrees altering its temperature sinusoidally with an amplitude of Ti=2 degrees. The equation which gives the temperature T(x.t) of the metal bar at any place x(in metres) inside it ...
April 15, 2011

mathVanna Black pays money for vowels. If consonants are worth nothing and the following words are worth the following amounts, then find the value of each vowel. All vowels are worth the same amount in each but each vowel has a different value. Audacious=$260 Equivocation=$340 ...
January 9, 2011

Ag.ScienceA married couple both of which are suspected of carring the gene foe Tay Sachs disease is considering having children.What advice would you give them?Give detaled resons for your advice including,but not limited to, possible genotype and phenotype ratios an combination....
October 7, 2010

math24, 005 is greater than 8 999 because 24 005 has "2" in the 10 000's column, as 8 999 has no numbers in the 10 000's column, therefore it is worth more.
September 27, 2010

8th grade scienceA glass of water is placed on a very sensitive scale and several antacids tablets are dropped into the water. The weight of the glass and its contents is less after the tablets dissolve than before the tablets dissolved. Tell how matter is conserved ? Please help! I couldn'...
March 16, 2010

8th grade sciencethe length of a piece of string is known to be exactly 9.84 cm. two students measured the string. student A used a ruler marked in centimeters and got a measurement of 10 cm. student B used a ruler marked in millimeters and centimeters and got a measurement of 9.8 cm. how ...
October 2, 2009

8th grade - sciencei have the same problem as before,only 3 more questions about it. please help!! how precise is the ruler originally used to measure the string? explain. what is the length of the string to the nearest centimeter? what is the length of the string to the nearest tenth of a ...
October 2, 2009

8th grade - sciencethe length of a string is known to be exactly 9.84cm. two students measured the string. student A used a ruler marked in centimeters and got a measurement of 10 cm. student B used a ruler marked in millimeters and centimeters and got a measurement of 9.8 cm. which student'...
October 2, 2009